Low tire pressure transducer

Details Low tire pressure transducer Low tire pressure transducer

1980-07-28

1982-07-06

Smith, Robert I.

Signals and indicators

Vehicle

Tire inflation or deflation

33DIG1, 116204, B60C 2302

Patent

active

043377181

ABSTRACT:
A low tire pressure transducer coupled to a tire rim includes a diaphragm subject to tire pressure on one side and to a mechanical spring force on the other side. A magnet within the transducer is coupled with a shunt which minimizes the external magnetic field when tire pressure is at its proper value. However, movement of the diaphragm occasioned by low tire pressure also moves the shunt so that the external magnetic field increases substantially. Movement of the shunt also opens a valve which relieves any air pressure buildup in the transducer on the spring side of the diaphragm thereby avoiding premature actuation of the transducer due to air leakage into the transducer. A retaining ring holds the transducer to the rim and contains vents for allowing the exhaust of air from the transducer.

REFERENCES:
patent: 2915035 (1959-01-01), Russell
patent: 3453590 (1969-07-01), Burgess et al.
patent: 3719159 (1973-03-01), Davis
patent: 3873787 (1975-03-01), Nozi
patent: 4134102 (1979-01-01), Stewart et al.

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